LOWER MANHATTAN — The bus driver of the express MTA bus that struck and killed a woman Friday night has been arrested.

Roger Weckworth, 63, was arrested Saturday and charged with failure to yield to a pedestrian causing injury and failure to yield to a pedestrian.

Weckworth was driving the QM7 bus about 5:30 p.m. at the intersection of Trinity Place and Exchange Valley in the Financial District when he struck a woman, identified as 58-year-old Bella-Yury Krementsova, police said.

Weckworth kept driving until pedestrians waved at him and told him there was a person trapped under the rear of the bus, according to police.

Weckworth stopped the bus and found Krementsova pinned underneath.

Krementsova suffered severe head and body trauma. EMS pronounced her dead at the scene.